311023230123100 has 72 divisors (see below), whose sum is σ = 736358651280000. Its totient is φ = 113086784817600.

The previous prime is 311023230123061. The next prime is 311023230123157. The reversal of 311023230123100 is 1321032320113.

It is a super-2 number, since 2×311023230123100² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5811090 + ... + 25608889.

It is an arithmetic number, because the mean of its divisors is an integer number (10227203490000).

Almost surely, 2^{311023230123100} is an apocalyptic number.

It is an amenable number.

311023230123100 is an abundant number, since it is smaller than the sum of its proper divisors (425335421156900).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

311023230123100 is a wasteful number, since it uses less digits than its factorization.

311023230123100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31429003 (or 31428996 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 311023230123100 its reverse (1321032320113), we get a palindrome (312344262443213).

The spelling of 311023230123100 in words is "three hundred eleven trillion, twenty-three billion, two hundred thirty million, one hundred twenty-three thousand, one hundred".